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While not everyone flushes the membrane of their reverse osmosis system, some people do it to increase membrane lifespan.
How and how often should you flush an RO membrane?
Find out below!
Recommendations about the ideal frequency of flushing an RO membrane vary across the board. Some claim that it should be done every day with no exceptions, while others flush their membranes once every one to four weeks.
In the end, what’s best for your RO membrane depends on various factors, including your water consumption levels and how contaminated your water supply is.
Also, as mentioned before, most people never flush their RO membranes and that’s fine. Under normal conditions, an RO membrane should still last 2-5 years.
If you don’t want to orient yourself solely on time estimates and prefer to look out for signs that it’s time for flushing your RO membrane, there are several things you need to watch out for. These include:
Once you’ve decided that it’s time to flush your RO membrane, here’s how to do it:
The three main methods for flushing an RO membrane are forward flushing, backward flushing, and air water flushing. Forward flushing is the most straightforward and readily available for home use, but it can leave you with some contaminants that were not properly removed…
Forward flushing utilizes the feed side. It simply involves running water at a high pressure and volume, relying on the resulting turbulence to remove contaminants from the membrane. While this method is generally effective, it may be insufficient in some cases.
Backward flushing, on the other hand, uses the permeate side. Water is forced back through the system at a high pressure, which removes most contaminants from the membrane. Once again, pressure is the main force that removes foulants. Both forward and backward flushing can result in a lot of wasted water.
Finally, with air water flushing, you use air bubbles on the feed side to cleanse the membrane. The extra turbulence created by the bubbles can help remove some of the more stubborn foulants, while the approach is relatively efficient in terms of water waste.
If you want to clean your RO membrane more thoroughly, you’ll need to disassemble the system and use cleaning chemicals. The process is not that complicated, but you must always take proper precautions and use protective wear.
If you have any questions about how often to flush an RO membrane please don’t hesitate to leave a comment below!
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